Fix use of osapi_compute_extension option in api_samples.
Fix use of osapi_compute_extension option in api_samples.

Change: I682fa491dd1435814b73404d91df3387504c3e39 changed the
scope of the osapi_compute_extension but didn't update it's use
in test_api_samples.py. This prevents the tests from being run
individually because the option is no longer in nova.config.

The CONF.import() for osapi_compute_extension now refers to the
proper location: nova.api.openstack.compute.contrib

Change-Id: I5d0f15c41e2d6e118a075872e706e91d6555dd39

whitepages/nova,klmitch/nova,isyippee/nova,bclau/nova,houshengbo/nova_vmware_compute_driver,mgagne/nova,fajoy/nova,maoy/zknova,mahak/nova,viggates/nova,jianghuaw/nova,CCI-MOC/nova,apporc/nova,devoid/nova,shahar-stratoscale/nova,rahulunair/nova,eonpatapon/nova,maheshp/novatest,gooddata/openstack-nova,eharney/nova,spring-week-topos/nova-week,cloudbase/nova-virtualbox,gooddata/openstack-nova,CiscoSystems/nova,tanglei528/nova,projectcalico/calico-nova,Triv90/Nova,iuliat/nova,mikalstill/nova,rickerc/nova_audit,dstroppa/openstack-smartos-nova-grizzly,dims/nova,hanlind/nova,dstroppa/openstack-smartos-nova-grizzly,kimjaejoong/nova,CEG-FYP-OpenStack/scheduler,gspilio/nova,leilihh/nova,kimjaejoong/nova,CCI-MOC/nova,petrutlucian94/nova_dev,gspilio/nova,tianweizhang/nova,zaina/nova,bigswitch/nova,CloudServer/nova,Tehsmash/nova,belmiromoreira/nova,sacharya/nova,mahak/nova,Juniper/nova,jianghuaw/nova,rajalokan/nova,silenceli/nova,klmitch/nova,citrix-openstack-build/nova,devendermishrajio/nova,leilihh/novaha,cyx1231st/nova,tangfeixiong/nova,bgxavier/nova,mikalstill/nova,tanglei528/nova,alaski/nova,vladikr/nova_drafts,belmiromoreira/nova,TieWei/nova,NeCTAR-RC/nova,MountainWei/nova,affo/nova,sridevikoushik31/openstack,vmturbo/nova,bigswitch/nova,sridevikoushik31/nova,cyx1231st/nova,hanlind/nova,maheshp/novatest,Juniper/nova,thomasem/nova,nikesh-mahalka/nova,hanlind/nova,blueboxgroup/nova,ruslanloman/nova,whitepages/nova,takeshineshiro/nova,imsplitbit/nova,sridevikoushik31/openstack,phenoxim/nova,mahak/nova,watonyweng/nova,plumgrid/plumgrid-nova,Juniper/nova,alaski/nova,zhimin711/nova,OpenAcademy-OpenStack/nova-scheduler,sridevikoushik31/nova,TwinkleChawla/nova,mmnelemane/nova,nikesh-mahalka/nova,edulramirez/nova,leilihh/nova,cloudbau/nova,BeyondTheClouds/nova,rahulunair/nova,Yusuke1987/openstack_template,Yuriy-Leonov/nova,Triv90/Nova,houshengbo/nova_vmware_compute_driver,varunarya10/nova_test_latest,eonpatapon/nova,zhimin711/nova,adelina-t/nova,JianyuWang/nova,akash1808/nova_test_latest,berrange/nova,thomasem/nova,cernops/nova,j-carpentier/nova,shahar-stratoscale/nova,saleemjaveds/https-github.com-openstack-nova,phenoxim/nova,maelnor/nova,rickerc/nova_audit,Stavitsky/nova,fajoy/nova,ewindisch/nova,zzicewind/nova,maoy/zknova,petrutlucian94/nova,dims/nova,joker946/nova,ted-gould/nova,bgxavier/nova,akash1808/nova,rajalokan/nova,qwefi/nova,Yuriy-Leonov/nova,akash1808/nova,CloudServer/nova,shootstar/novatest,ntt-sic/nova,cloudbase/nova,sridevikoushik31/openstack,LoHChina/nova,eayunstack/nova,yrobla/nova,felixma/nova,sebrandon1/nova,fnordahl/nova,Yusuke1987/openstack_template,virtualopensystems/nova,houshengbo/nova_vmware_compute_driver,TwinkleChawla/nova,vladikr/nova_drafts,TieWei/nova,gooddata/openstack-nova,leilihh/novaha,jeffrey4l/nova,akash1808/nova_test_latest,felixma/nova,orbitfp7/nova,maoy/zknova,saleemjaveds/https-github.com-openstack-nova,ruslanloman/nova,alvarolopez/nova,petrutlucian94/nova_dev,double12gzh/nova,sebrandon1/nova,mandeepdhami/nova,BeyondTheClouds/nova,zzicewind/nova,mgagne/nova,takeshineshiro/nova,Brocade-OpenSource/OpenStack-DNRM-Nova,plumgrid/plumgrid-nova,berrange/nova,yatinkumbhare/openstack-nova,petrutlucian94/nova,BeyondTheClouds/nova,rajalokan/nova,noironetworks/nova,tudorvio/nova,tealover/nova,viggates/nova,cernops/nova,yosshy/nova,redhat-openstack/nova,JianyuWang/nova,zaina/nova,vmturbo/nova,jianghuaw/nova,sridevikoushik31/nova,yosshy/nova,tudorvio/nova,tianweizhang/nova,bclau/nova,JioCloud/nova,barnsnake351/nova,Stavitsky/nova,eayunstack/nova,j-carpentier/nova,rrader/nova-docker-plugin,Francis-Liu/animated-broccoli,JioCloud/nova_test_latest,isyippee/nova,mmnelemane/nova,shootstar/novatest,shail2810/nova,yrobla/nova,maelnor/nova,scripnichenko/nova,rajalokan/nova,double12gzh/nova,raildo/nova,alexandrucoman/vbox-nova-driver,cloudbase/nova,mikalstill/nova,gooddata/openstack-nova,ntt-sic/nova,varunarya10/nova_test_latest,LoHChina/nova,devendermishrajio/nova_test_latest,devendermishrajio/nova,fajoy/nova,cloudbau/nova,openstack/nova,mandeepdhami/nova,gspilio/nova,badock/nova,angdraug/nova,Metaswitch/calico-nova,NeCTAR-RC/nova,dawnpower/nova,Brocade-OpenSource/OpenStack-DNRM-Nova,vmturbo/nova,spring-week-topos/nova-week,DirectXMan12/nova-hacking,barnsnake351/nova,Triv90/Nova,affo/nova,redhat-openstack/nova,tangfeixiong/nova,devoid/nova,JioCloud/nova_test_latest,klmitch/nova,watonyweng/nova,yrobla/nova,dawnpower/nova,virtualopensystems/nova,SUSE-Cloud/nova,eharney/nova,jeffrey4l/nova,raildo/nova,adelina-t/nova,CEG-FYP-OpenStack/scheduler,DirectXMan12/nova-hacking,yatinkumbhare/openstack-nova,iuliat/nova,orbitfp7/nova,ted-gould/nova,alexandrucoman/vbox-nova-driver,joker946/nova,sacharya/nova,JioCloud/nova,blueboxgroup/nova,apporc/nova,silenceli/nova,qwefi/nova,jianghuaw/nova,openstack/nova,Francis-Liu/animated-broccoli,angdraug/nova,klmitch/nova,rahulunair/nova,alvarolopez/nova,cloudbase/nova,badock/nova,maheshp/novatest,DirectXMan12/nova-hacking,fnordahl/nova,rrader/nova-docker-plugin,Juniper/nova,Mounta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